SemanSemantic-UItic-UI/build/minified/modules/dimmer.min.css

.ui.dimmable {
  position: relative;
}

.ui.dimmer {
  display: none;
  position: absolute;
  top: 0!important;
  left: 0!important;
  width: 0;
  height: 0;
  text-align: center;
  vertical-align: middle;
  background-color: rgba(0,0,0,.85);
  opacity: 0;
  line-height: 1;
  -webkit-animation-fill-mode: both;
  -ms-animation-fill-mode: both;
  animation-fill-mode: both;
  -webkit-animation-duration: .5s;
  -ms-animation-duration: .5s;
  animation-duration: .5s;
  -webkit-transition: background-color .5s linear;
  transition: background-color .5s linear;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -ms-box-sizing: border-box;
  box-sizing: border-box;
  z-index: 1000;
}

.ui.dimmer>.content {
  width: 100%;
  height: 100%;
  display: table;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

.ui.dimmer>.content>div {
  display: table-cell;
  vertical-align: middle;
  color: #FFF;
}

.ui.segment>.ui.dimmer {
  border-radius: 5px;
}

.ui.horizontal.segment>.ui.dimmer,
.ui.vertical.segment>.ui.dimmer {
  border-radius: 5px;
}

.ui.dimmed.dimmable:not(body) {
  overflow: hidden;
}

.ui.dimmed.dimmable>.ui.dimmer,
.ui.active.dimmer {
  display: block;
  width: 100%;
  height: 100%;
  opacity: 1;
}

.ui.disabled.dimmer {
  width: 0!important;
  height: 0!important;
}

.ui.page.dimmer {
  position: fixed;
  -webkit-transform-style: preserve-3d;
  -ms-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-perspective: 2000px;
  -ms-perspective: 2000px;
  perspective: 2000px;
  -webkit-transform-origin: center center;
  -ms-transform-origin: center center;
  transform-origin: center center;
}

.ui.scrolling.dimmable>.dimmer,
.ui.scrolling.page.dimmer {
  position: absolute;
}

.ui.dimmer>.top.aligned.content>* {
  vertical-align: top;
}

.ui.dimmer>.bottom.aligned.content>* {
  vertical-align: bottom;
}

.ui.inverted.dimmer {
  background-color: rgba(255,255,255,.85);
}

.ui.inverted.dimmer>.content>* {
  color: rgba(0,0,0,.8);
}

.ui.simple.dimmer {
  display: block;
  overflow: hidden;
  opacity: 1;
  z-index: -100;
  background-color: rgba(0,0,0,0);
}

.ui.dimmed.dimmable>.ui.simple.dimmer {
  overflow: visible;
  opacity: 1;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,.85);
  z-index: 1;
}

.ui.simple.inverted.dimmer {
  background-color: rgba(255,255,255,0);
}

.ui.dimmed.dimmable>.ui.simple.inverted.dimmer {
  background-color: rgba(255,255,255,.85);
}